EP 4060059 A4 20230118 - METHOD FOR PRODUCING NON-ORIENTED ELECTRICAL STEEL SHEET
Title (en)
METHOD FOR PRODUCING NON-ORIENTED ELECTRICAL STEEL SHEET
Title (de)
VERFAHREN ZUR HERSTELLUNG VON NICHTORIENTIERTEM ELEKTROSTAHLBLECH
Title (fr)
PROCÉDÉ DE FABRICATION DE TÔLE D'ACIER ÉLECTROMAGNÉTIQUE NON ORIENTÉ
Publication
Application
Priority
- JP 2019206708 A 20191115
- JP 2020042465 W 20201113
Abstract (en)
[origin: EP4060059A1] A method for manufacturing a non-oriented electrical steel sheet includes a step of obtaining a hot-rolled steel sheet by performing hot rolling on a steel material having a predetermined chemical composition, a step of performing first cold rolling on the hot-rolled steel sheet, and a step of performing first annealing after the first cold rolling. A final pass of finish rolling is performed in a temperature range equal to or higher than an Ar1 temperature, and cooling of which an average cooling rate is in a range of 50 to 500°C/sec is started in 0.1 sec from completion of rolling of the final pass of the finish rolling and is performed up to a temperature range higher than 250°C and equal to or lower than 700°C.
IPC 8 full level
C21D 8/12 (2006.01); C22C 38/00 (2006.01); C22C 38/60 (2006.01); H01F 1/147 (2006.01)
CPC (source: EP KR US)
C21D 6/001 (2013.01 - EP); C21D 6/005 (2013.01 - EP); C21D 6/008 (2013.01 - EP); C21D 8/0226 (2013.01 - US); C21D 8/0236 (2013.01 - US); C21D 8/0268 (2013.01 - US); C21D 8/1222 (2013.01 - EP KR); C21D 8/1233 (2013.01 - EP KR); C21D 8/1261 (2013.01 - EP); C21D 8/1266 (2013.01 - EP); C21D 8/1272 (2013.01 - EP KR); C21D 9/46 (2013.01 - EP); C22C 38/001 (2013.01 - EP KR); C22C 38/002 (2013.01 - EP US); C22C 38/004 (2013.01 - EP); C22C 38/005 (2013.01 - EP); C22C 38/008 (2013.01 - EP KR US); C22C 38/02 (2013.01 - EP KR US); C22C 38/04 (2013.01 - EP US); C22C 38/06 (2013.01 - EP KR US); C22C 38/08 (2013.01 - EP); C22C 38/10 (2013.01 - EP); C22C 38/105 (2013.01 - US); C22C 38/16 (2013.01 - EP US); C22C 38/60 (2013.01 - EP US); H01F 1/147 (2013.01 - KR); H01F 1/14775 (2013.01 - EP); H01F 1/16 (2013.01 - EP)
Citation (search report)
- [Y] JP 2017193731 A 20171026 - NIPPON STEEL & SUMITOMO METAL CORP
- [Y] EP 3140430 A1 20170315 - CENTRO SVILUPPO MAT S P A [IT]
- [Y] EP 3214195 A1 20170906 - JFE STEEL CORP [JP]
- [Y] JP 2019178380 A 20191017 - NIPPON STEEL CORP
- [A] EP 2602335 A1 20130612 - NIPPON STEEL & SUMITOMO METAL CORP [JP]
- See also references of WO 2021095854A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4060059 A1 20220921; EP 4060059 A4 20230118; BR 112022002865 A2 20220517; CN 114286871 A 20220405; CN 114286871 B 20230317; JP 7047983 B2 20220405; JP WO2021095854 A1 20210520; KR 20220032109 A 20220315; TW 202126821 A 20210716; TW I753650 B 20220121; US 2022349037 A1 20221103; WO 2021095854 A1 20210520
DOCDB simple family (application)
EP 20886738 A 20201113; BR 112022002865 A 20201113; CN 202080059889 A 20201113; JP 2020042465 W 20201113; JP 2021556178 A 20201113; KR 20227005033 A 20201113; TW 109139782 A 20201113; US 202017638461 A 20201113